ANALOX Ax60+ Multi-Gas, Service Manual

Page: 6 / 62

Ax60+ Multi-Gas
Service Manual
Int. Approved
Document ref: P0159-803-11 September 2019 Page 6 of 62
Copyright © 2015 Analox Ltd. All Rights Reserved.
Commercial in Confidence
1.4 Alarm terminology (CO
2
)
Alarms will display in priority order, in the order of AL4 to TWA
Display name for
users
Alarm description Identification by
software
Default
setpoint
Notes
TWA Time weighted
average over 8
hours Alarm 1 or A1 0.5% CO
2
Fixed alarm. At present it is not possible to
change a TWA alarm set-point.
AL1 High
alarm
Alarm 2 or A2 1.5% CO
2
This alarm must be set lower than Alarm 3
(it may be set to 0.5% to give a pre-alarm
condition).
CO2 High-high alarm Alarm 3 or A3 3.0% CO
2
This alarm must be set higher than Alarm
2.
AL4 High-high alarm Alarm 4 or A4 3.5% CO
2
Alarm is disabled by default.
• The time-weighted average alarm is displayed to users as ‘ TWA ’ and identified by the software as ‘ A1 ’ or
‘ Alarm 1 ’ and is announced by the Central Display only.
•
The high alarm is displayed to users as ‘ AL1 ’ and identified by the software as ‘ A2 ’ or ‘ Alarm 2 ’ and triggers
the Alarm strobe once every 2 seconds, sounder is disabled by default, but if enabled by the user it will also
sound once every 2 seconds.
•
The high-high alarm is displayed to users as ‘ CO2 ’ and identified by the software as ‘ A3 ’ or ‘ Alarm 3 ’ and
triggers the Alarm strobe/sounder once every second.
•
The fourth alarm level ‘AL4’ is disabled by default; this is identified by the software as ‘ A4 ’ or ‘ Alarm 4 ’. If
enabled the Alarm strobe and sounder would trigger once every second.
1.5 Alarm terminology (O
2
)
Alarms will display in priority order, in the order of AL4 to AL1
Display name for
users Alarm description Identification by
software
Default
setpoint Notes
AL1 Low
alarm
Alarm 1 or A1 19.5% O
2
Alarm is disabled by default.
AL2 Low
alarm
Alarm 2 or A2 19.5% O
2
This alarm must be set lower than Alarm 3.
AL3 High-high alarm Alarm 3 or A3 23.0% O
2
This alarm must be set higher than Alarm
2.
AL4 Low-low
alarm
Alarm 4 or A4 18.0% O
2
This alarm must be set lower than Alarm 2.
•
The first low or high alarm ‘ AL1 ’ AL 1 is disabled by default; this is identified by the software as ‘ A1 ’ or ‘ Alarm
1 ’. If enabled the Alarm strobe and sounder would trigger once every 2 seconds.
•
The low- level alarm is displayed to users as ‘ AL2 ’ and identified by the software as ‘ A2 ’ or ‘ Alarm 2 ’ and
triggers the Alarm strobe once every 2 seconds, sounder is disabled by default, but if enabled by the user it
will also sound once every 2 seconds.
• The high-high alarm is displayed to users as ‘ AL3 ’ and identified by the software as ‘ A3 ’ or ‘ Alarm 3 ’ and
triggers the Alarm strobe/sounder once every second.
• The low-low alarm is displayed to users as ‘ AL4 ’ and identified by the software as ‘ A4 ’ or ‘ Alarm 4 ’ and
triggers the Alarm strobe/sounder once every second.